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<head><meta charset="utf-8"><title>unrecognized option json · t-compiler/cargo-bisect-rustc · Zulip Chat Archive</title></head>
<h2>Stream: <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/index.html">t-compiler/cargo-bisect-rustc</a></h2>
<h3>Topic: <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html">unrecognized option json</a></h3>

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<a name="200441348"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200441348" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200441348">(Jun 10 2020 at 16:33)</a>:</h4>
<p>I'm getting...</p>



<a name="200441357"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200441357" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200441357">(Jun 10 2020 at 16:33)</a>:</h4>
<div class="codehilite"><pre><span></span><code>   Compiling myapp v0.1.0 (/tmp/myapp)
error: Unrecognized option: &#39;json&#39;

error: could not compile `myapp`.

To learn more, run the command again with --verbose.
</code></pre></div>



<a name="200441382"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200441382" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200441382">(Jun 10 2020 at 16:33)</a>:</h4>
<p>when trying to cargo bisect rustc using old dates</p>



<a name="200441437"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200441437" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200441437">(Jun 10 2020 at 16:33)</a>:</h4>
<p>I thought it was related with the edition but I've removed the edition from Cargo.toml and still getting this issue</p>



<a name="200441891"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200441891" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200441891">(Jun 10 2020 at 16:37)</a>:</h4>
<p>I've seen that I need to use <code>--script</code> for these cases</p>



<a name="200442253"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200442253" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200442253">(Jun 10 2020 at 16:40)</a>:</h4>
<p>now I wonder how to correctly use script</p>



<a name="200442281"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200442281" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200442281">(Jun 10 2020 at 16:40)</a>:</h4>
<p>cc <span class="user-mention" data-user-id="255061">@LeSeulArtichaut</span> <span class="user-mention" data-user-id="262810">@Chris Simpkins</span></p>



<a name="200442331"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200442331" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Eric Huss <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200442331">(Jun 10 2020 at 16:41)</a>:</h4>
<p>I think you need to use <code>--with-cargo</code> for older releases.</p>



<a name="200442401"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200442401" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200442401">(Jun 10 2020 at 16:41)</a>:</h4>
<p><span class="user-mention silent" data-user-id="120518">Eric Huss</span> <a href="#narrow/stream/217417-t-compiler.2Fcargo-bisect-rustc/topic/unrecognized.20option.20json/near/200442331">said</a>:</p>
<blockquote>
<p>I think you need to use <code>--with-cargo</code> for older releases.</p>
</blockquote>
<p>with-cargo where?</p>



<a name="200442425"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200442425" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Eric Huss <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200442425">(Jun 10 2020 at 16:41)</a>:</h4>
<p>cargo-bisect-rustc --with-cargo …</p>



<a name="200442493"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200442493" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200442493">(Jun 10 2020 at 16:42)</a>:</h4>
<p>ahh</p>



<a name="200442496"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200442496" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200442496">(Jun 10 2020 at 16:42)</a>:</h4>
<p>right</p>



<a name="200442764"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200442764" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Chris Simpkins <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200442764">(Jun 10 2020 at 16:44)</a>:</h4>
<p>believe that this starts to occur prior to ~ Jul 2019</p>



<a name="200442979"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200442979" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Chris Simpkins <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200442979">(Jun 10 2020 at 16:46)</a>:</h4>
<p>I haven’t tried the —with-cargo option.  Good to hear that there is a workaround! <span aria-label="slight smile" class="emoji emoji-1f642" role="img" title="slight smile">:slight_smile:</span></p>



<a name="200482997"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200482997" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Vadim Petrochenkov <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200482997">(Jun 10 2020 at 22:01)</a>:</h4>
<p><a href="https://github.com/rust-lang/cargo-bisect-rustc/issues/81">https://github.com/rust-lang/cargo-bisect-rustc/issues/81</a></p>



<a name="200501406"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200501406" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Chris Simpkins <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200501406">(Jun 11 2020 at 02:55)</a>:</h4>
<p><span class="user-mention silent" data-user-id="123856">Vadim Petrochenkov</span> <a href="#narrow/stream/217417-t-compiler.2Fcargo-bisect-rustc/topic/unrecognized.20option.20json/near/200482997">said</a>:</p>
<blockquote>
<p><a href="https://github.com/rust-lang/cargo-bisect-rustc/issues/81">https://github.com/rust-lang/cargo-bisect-rustc/issues/81</a></p>
</blockquote>
<p>Is there a reason why this is not the default?  I've run into this problem on a number of occasions too</p>



<a name="200545501"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200545501" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200545501">(Jun 11 2020 at 13:43)</a>:</h4>
<p>I'd make it a default but about the reason unsure, cc <span class="user-mention" data-user-id="116122">@simulacrum</span></p>



<a name="200547010"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200547010" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200547010">(Jun 11 2020 at 13:55)</a>:</h4>
<p>faster to not do it. we should probably make it the default though.</p>



<a name="200547291"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200547291" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200547291">(Jun 11 2020 at 13:57)</a>:</h4>
<p>maybe the best is to check the date and figure out if you would need it or not</p>



<a name="200547358"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200547358" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200547358">(Jun 11 2020 at 13:57)</a>:</h4>
<p>I'd just always do it.</p>



<a name="200547395"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200547395" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200547395">(Jun 11 2020 at 13:57)</a>:</h4>
<p><span aria-label="+1" class="emoji emoji-1f44d" role="img" title="+1">:+1:</span></p>



<a name="200672066"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200672066" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Chris Simpkins <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200672066">(Jun 12 2020 at 13:49)</a>:</h4>
<p><span class="user-mention silent" data-user-id="116122">simulacrum</span> <a href="#narrow/stream/217417-t-compiler.2Fcargo-bisect-rustc/topic/unrecognized.20option.20json/near/200547358">said</a>:</p>
<blockquote>
<p>I'd just always do it.</p>
</blockquote>
<p>Will have a look this weekend.</p>



<a name="200744319"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200744319" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Chris Simpkins <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200744319">(Jun 13 2020 at 02:15)</a>:</h4>
<p><span class="user-mention" data-user-id="116266">@Santiago Pastorino</span> I changed the default approach to use installed nightly cargo by default.  Can you point me to the source and bisect-rustc command that you used in your original post in this thread so that I can test it?</p>



<a name="200744931"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200744931" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Chris Simpkins <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200744931">(Jun 13 2020 at 02:31)</a>:</h4>
<p><a href="https://github.com/rust-lang/cargo-bisect-rustc/pull/98">https://github.com/rust-lang/cargo-bisect-rustc/pull/98</a></p>



<a name="200924628"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200924628" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Chris Simpkins <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200924628">(Jun 15 2020 at 18:02)</a>:</h4>
<p><span class="user-mention" data-user-id="116122">@simulacrum</span> <span class="user-mention" data-user-id="116083">@pnkfelix</span> <span class="user-mention" data-user-id="116266">@Santiago Pastorino</span> thoughts? </p>
<p>Santiago please let me know what source you were working with here and I will confirm that this works</p>



<a name="200924722"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200924722" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200924722">(Jun 15 2020 at 18:02)</a>:</h4>
<p>hm I think I would just download cargo always (perhaps have an explicit override but no more than that). realistically nightly cargo isn't necessarily going to work with old master commits either, seems like it's probably just replacing one problem with another</p>



<a name="200924805"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200924805" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200924805">(Jun 15 2020 at 18:03)</a>:</h4>
<p>oh I see that's what your PR already does, I misinterpreted "nightly cargo"</p>



<a name="200924814"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200924814" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> simulacrum <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200924814">(Jun 15 2020 at 18:03)</a>:</h4>
<p>yeah seems fine though I didn't look at the code too closely</p>



<a name="200925463"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200925463" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Chris Simpkins <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200925463">(Jun 15 2020 at 18:10)</a>:</h4>
<p><span aria-label="+1" class="emoji emoji-1f44d" role="img" title="+1">:+1:</span></p>



<a name="200937057"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200937057" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200937057">(Jun 15 2020 at 19:53)</a>:</h4>
<p><span class="user-mention silent" data-user-id="262810">Chris Simpkins</span> <a href="#narrow/stream/217417-t-compiler.2Fcargo-bisect-rustc/topic/unrecognized.20option.20json/near/200924628">said</a>:</p>
<blockquote>
<p><span class="user-mention silent" data-user-id="116122">simulacrum</span> <span class="user-mention silent" data-user-id="116083">pnkfelix</span> <span class="user-mention silent" data-user-id="116266">Santiago Pastorino</span> thoughts? </p>
<p>Santiago please let me know what source you were working with here and I will confirm that this works</p>
</blockquote>
<p>I don't remember anymore what I was testing exactly</p>



<a name="200937132"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/200937132" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#200937132">(Jun 15 2020 at 19:54)</a>:</h4>
<p>but I guess if you try an start date that is old enough you will hit this issue</p>



<a name="202883224"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/202883224" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Chris Simpkins <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#202883224">(Jul 04 2020 at 17:21)</a>:</h4>
<p>added the <code>--without-cargo</code> option in PR <a href="https://github.com/rust-lang/cargo-bisect-rustc/pull/98">https://github.com/rust-lang/cargo-bisect-rustc/pull/98</a>.  If you know of an old ICE that we can use to test, please let me know</p>



<a name="202985988"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/202985988" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#202985988">(Jul 06 2020 at 13:09)</a>:</h4>
<p><span class="user-mention" data-user-id="262810">@Chris Simpkins</span> merged!, feel free to release a new version</p>



<a name="202986582"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/202986582" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Chris Simpkins <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#202986582">(Jul 06 2020 at 13:14)</a>:</h4>
<p><span class="user-mention" data-user-id="116266">@Santiago Pastorino</span> Ty. It still needs to be tested.   I need to find source for an old ICE to make sure that this addresses the issue.</p>



<a name="202986995"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/202986995" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Santiago Pastorino <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#202986995">(Jul 06 2020 at 13:18)</a>:</h4>
<p><span aria-label="+1" class="emoji emoji-1f44d" role="img" title="+1">:+1:</span></p>



<a name="202988704"></a>
<h4><a href="https://rust-lang.zulipchat.com#narrow/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized%20option%20json/near/202988704" class="zl"><img src="https://rust-lang.github.io/zulip_archive/assets/img/zulip.svg" alt="view this post on Zulip" style="width:20px;height:20px;"></a> Chris Simpkins <a href="https://rust-lang.github.io/zulip_archive/stream/217417-t-compiler/cargo-bisect-rustc/topic/unrecognized.20option.20json.html#202988704">(Jul 06 2020 at 13:33)</a>:</h4>
<p><span class="user-mention silent" data-user-id="116266">Santiago Pastorino</span> <a href="#narrow/stream/217417-t-compiler.2Fcargo-bisect-rustc/topic/unrecognized.20option.20json/near/202986995">said</a>:</p>
<blockquote>
<p><span aria-label="+1" class="emoji emoji-1f44d" role="img" title="+1">:+1:</span></p>
</blockquote>
<p>Will push a new release as soon as this is verified.  There is a date fix in master that is worth getting out too.</p>



<hr><p>Last updated: Aug 07 2021 at 22:04 UTC</p>
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